Purging composition for cleaning thermoplastic processing equipment
US5236514A · kind A · utility
22Cited by
2References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 29, 1991 |
| Grant date | Aug 17, 1993 |
| Priority date | — |
| Expiry date | Oct 29, 2011 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC11D2111/20
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A purging composition is provided which is useful for cleaning thermoplastic processing equipment. The composition is composed of the following components in the following concentrations: ______________________________________ Component Percent by Weight ______________________________________ Adsorbate 0.05 to 5 Matrix resin 49.5 to 99.5 Abrasive (optional) 0 to 50 ______________________________________ The composition can also contain a carrier resin having a melting point different from that of the matrix resin.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.